
Note that the majorizer \(F^{\mathsf {M}}(u,v)\)  touches \(F(u)\)  for \(u=v\) , as shown in (REF ).
Figure REF  illustrates the majorizer (red line) of a penalty function (blue line), which will be described in the following subsection.
The proof of convergence for MM has been given in Ref. [1]}.
More details about the MM procedure can be found in [1]}, [3]} and references therein.
